A new keyword `remove` allows to not deploy resources that have been
combined. Small rework on how the plugin work to remove one change
from hyde generator about dependencies handling.

This new plugin allow to combine multiple files into one. Here is an
example:

```
---
combine:
    files: luffy.*.js
    where: top
---

luffy.effects();
luffy.search();
```

All luffy.*.js files will be combined and added to the top of the file.

Always first sort by name then by any attributes you want. Otherwise,
tests may fail.

Use strftime instead. There seems to be no dateformat filter in jinja
documentation.

Node.js tools may be installed in /usr/bin if installed by system
package tools or in ~/bin if installed by a default installation of npm.